The IANA WHOIS Service is provided using the WHOIS protocol on port 43. This web gateway will query this server and return the results. Accepted query arguments are domain names, IP addresses and AS numbers. By submitting any personal data, you acknowledge and agree that the personal data submitted will be processed in accordance with our Privacy Policy, and you agree to abide by the website Terms of Service.
% IANA WHOIS server % for more information on IANA, visit http://www.iana.org % This query returned 1 object domain: 151.in-addr.arpa organisation: Administered by RIPE NCC nserver: ns3.afrinic.net. nserver: ns3.lacnic.net. nserver: ns4.apnic.net. nserver: pri.authdns.ripe.net. nserver: rirns.arin.net. ds-rdata: 33422 13 2 5bb123266e18d985c75ad39a56a98d2acd9f9d5ed429594e842f2234f1ca342a whois: whois.ripe.net changed: 1993-05 changed: 2026-03-17 source: IANA